530results about How to "High ion conductivity" patented technology

The invention discloses a solid electrolyte film, and a preparation method and an application of the solid electrolyte film. The solid electrolyte film comprises a solid electrolyte layer and a porous ceramic layer, wherein the thickness of the solid electrolyte layer is 0.5-10 micrometers; the thickness of the porous ceramic layer is 100-300 micrometers; and the solid electrolyte layer uniformly covers the porous ceramic layer. The preparation method of the solid electrolyte film comprises the following steps of (1) preparing a solid electrolyte precursor: sintering raw material powder at 500-700 DEG C, (2) preparing a solid electrolyte target material: adding the powder to a binding agent, pressing the binding agent into sheets and sintering, and (3) applying the solid electrolyte film on a porous ceramic substrate: uniformly applying the solid electrolyte film on porous ceramic by a magnetron sputtering method. The solid electrolyte film has good ionic conduction properties and mechanical properties, is applied to preparation of a lithium air battery, and is low in internal resistance and good in electrical performance. The method is simple in technology and low in cost.

The invention belongs to the technical field of lithium ion batteries, in particular relates to a composite anode material for the lithium ion battery. The composite anode material comprises an anode active substance and a coating layer coated on the surface of the anode active substance, wherein the anode active substance can be Si, SiOx or silicon alloy, the coating layer is polymer which is of a reticular structure, and the mass percent of the coating layer accounts for 1-20% of the anode material. Compared with the prior art, the composite anode material has the advantages that the polymer which is of the reticular structure and used as the coating layer is coated on the surface of the active substance in a cross-linking manner, the coating layer has the electron conduction property and the ion conduction property, so that the situation that the lithium ions can be inserted into and separated from the anode active substance particles smoothly is ensured; furthermore, the coating layer is of the reticular structure and has good mechanical strength, and therefore, the integrality of the anode active substance particles can be kept in the electrochemical cycle process, the deformation of an anode strip is relieved, the electrochemical cycle performance of the lithium ion battery is improved and the service life of the lithium ion battery is prolonged.

The invention discloses a metal fiber-nanometer carbon fiber-carbon aerogel composite material and a preparation method and a use thereof, wherein, the material contains metal fiber, nanometer carbonfiber and carbon aerogel; a binding point of the metal fiber is sintered on a tri-dimensional net structure, the nanometer carbon fiber grows on the metal fiber, and the carbon aerogel is coated on the nanometer carbon fiber. The preparation method comprises the following steps: sintering the metal fiber net structure in a large area on a selected thin layer; allowing the nanometer carbon fiber togrow by catalyzing a selected chemical vapor phase deposition method of a carbon-containing compound under a specified condition; then coating a selected organic polymer on the nanometer carbon fiber, and carbonizing the polymer at a certain temperature to obtain the metal fiber-nanometer carbon fiber-carbon aerogel composite material. The material can be taken as an electrode material of a novelchemical power supply; and the material has a self-supporting integral structure without an organic polymer macromolecular binding agent, has a tri-dimensional layered hole structure which is beneficial to ion transmission and storage, and has high electrical conductivity, small internal resistance and good chemical energy storage performance.

An electrolysis conversion system for converting liquid to gas, such as water into hydrogen and oxygen, includes a housing in which are housed encapsulated and non-encapsulated electrodes in any one of side-by-side, rolled or folded relationship. The electrodes are immersed in an electrolyte, water or the like and are appropriately electrically connected to positive and negative sides of an energy source. The encapsulation material of the encapsulated electrodes can be substantially conductive or non-conductive to either ion flow or electron flow and either substantially non-porous or porous to gas bubbles with the option of utilizing spacers to prevent arcing and thereby generate hydrogen and oxygen from the water / electrolyte. The encapsulating media is either a folded flexible sheet heat sealed along three edges, two sheets heat sealed along four edges, a tube heat sealed along opposite axial edges or a coating dip-coated, electro-deposited, silk screen coated or similarly applied to the electrode which is preferably porous and can either be rigid or relatively bendable / flexible.

To provide a surface modified lithium-containing composite oxide for a cathode active material for a lithium ion secondary cell, which is excellent in volume capacity density, safety, durability for charge and discharge cycles and an excellent rate property, and its production process.Particles of a lithium-containing composite oxide represented by the formula: LipNxMyOzFa, wherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than N, 0.9≦p≦1.3, 0.9≦x≦2.0, 0≦y≦0.1, 1.9≦z≦4.2, and 0≦a≦0.05, are impregnated with a solution containing a lanthanoid source and a titanium source, followed by heat treatment at from 550 to 1,000° C., to prepare a surface modified lithium-containing composite oxide having a highly crystalline lithium lanthanoid titanium composite oxide having a perovskite structure containing no fluorine contained in the surface layer of the particles.

A composite electrolyte membrane of the present invention includes a porous body composed of an inorganic substance and an electrolyte material. The porous body includes therein plural spherical pores in which a diameter is substantially equal, and communicating ports each allowing the spherical pores adjacent to each other to communicate with each other. The electrolyte material is provided on the spherical pores and the communicating ports, has proton conductivity, and is composed of a hydrocarbon polymer. The proton-conductive composite electrolyte membrane has excellent ion conductivity, high heat resistance, and restricted swelling when being hydrous, and is capable of being produced at low cost.

The invention discloses strongly alkaline polyarylether ionomer and preparation and application thereof. The strongly alkaline polyarylether ionomer is prepared by polymerizing 2 (4, 4'-hydroxyphenyl) diphenylmethane and chlorine-containing or fluorine-containing aromatic monomer with Ar1 and Ar1 structure to obtain polyarylether, and subjecting the polyarylether to a series of functional processes such as chloromethylation, quaternization and alkalization. An alkaline anion exchange membrane is prepared by casting chloromethylation-based polyarylether solution into a membrane and subjecting the membrane to a series of functional processes such as quaternization and alkalization. The alkaline anion exchange membrane has fine barrier action on methyl alcohol, is fine in physicochemical property, high in thermal stability and fine in conductivity at high temperature, overcomes the defects of unstable property and low ionic conductivity of existing polyarylether anion exchange membranes, is applicable to fuel cell alkaline anion exchange membranes, and has broad application prospect.